Insulated tumbler



ec. 9, i958 P. MESHBERG INSULATED TUMBLER Filed Feb. 6, 1956 NVM/TOR. 17g/n Mem? wfg Patented Dec. 9, 1958 2,863,585 INSULATED TUMBLER Philip Meshberg, Fairfield, Conn. Application February 6, 1956, Serial No. 563,613 Claims. l (Cl. 220-15) This invention relates to drinking vessels and more specifically to an improved double walled, insulating drinking cup, tumbler or the like.

Heretofore, in double walled, drinking vessels, particularly those formed of aluminum or other metallic material-or alloy, the-spaced shells of the vessel were joined adjacent the open end thereof-by bending, crimping or otherwise fusing the upper edge portions thereof'to secure the shells together to form aunitary tumbler or cup. Cups of this type,lin addition to being relatively difficult and expensive to fabricate, had the added disadvantage of discomfort when -used for drinking temperatured drinks that are either very hot'or very cold. The existence of the rapid transfer of heat between the temperatured contents contained therein, and the metallic walls of the tumbler or cupsheretofore known,in the event a very hot drink be contained therein, would cause ythe lip-engaging portion of the vessel to become hot enough to be uncomfortable `or burn the lips of a drinker. If a very cold drink was contained therein, the lip portion ofthe vessel would become' sufficiently cold causing the lip membranes of the user to stick or adhere to the chilled lip portion thereof. For Vthese reasons, the double walled vessels, 'heretoforekknown, couldbe onlysafely ork comfortably used for drinking only moderately temperatured drinks which, in effect, defeated the primary purpose and utility of the double walled vessel. Y

An object of the present invention is to overcome the disadvantages bydisposing between and projecting beyond the edge portions of the spaced shells of a double walled cup a resilient, heat-resisting or insulating member to providea lip-engaging rim for the cup to protect the lips 'of a drinkerfrom injury caused by the transfer of heat to the walls of the cup by the extreme temperature of either hot or cold drinks contained therein.

Another lobject of this invention is to provide an improved assembly whereby the spacially disposed shells and resilient rim member projecting beyond the edge portions thereof are secured togetherV to form a sealing connection which issturdy, leakproof, positive and relatively simple to assemble.

A feature of this invention resides in the provision that the improved drinking cup is relatively simple in construction, inexpensive to manufacture and positive in operation.

Other features and advantages of the invention will be apparent from the specification and claims when considered in connection with the drawings in which:

Figure l illustrates an exploded sectional view of the improved drinking cup.

, Fig. 2 is an assembled sectional view of the said cup.

Fig. 3 is a detailed sectional view of a modified form of the invention. l

Fig. 4 is a detailed sectional view of another modified form.

Referring to the drawings, the improved double walled insulating vessel, such as a cup or tumbler utilized for drinking extremely temperatured drinks, consists generally of an inner shell member 11, an outer shell member 12 spaced therefrom and a heat-resisting or insulating lipengaging member 13 disposed between the upper edge portions of the shell membersandy which projects outwardly beyond the edges thereofto form the lip-engaging portion of the cup or tumbler. As illustrated in Figs. l and ,2, the inner shell member 11 consists of a tubular member having slightly inwardly tapered side walls 14 upper end 17 of the outer shell va heat-resisting or insulating member and au integrally formed bottom wall 15 extending therebetween. The upper end portion 16 of the inner shell 11 is ared upwardly and outwardly to form the open end thereof.

The outer shell 12 consists of a tubular member which is larger than that of the inner member 11 so that the latter may be readily received therein. Adjacent the l 12 there is provided an outwardly and upwardly ared portion similar to the flared portion of the inner member, and projecting upwadly from the edge of the flared portion' 17 is an upwardly, annular, extending gripping portion 18. According to this invention, it will be noted that/the gripping portion 18 of the outer shell 12 extends slightly above the edge 16a of the flared edge portion 16 of the inner shell when in assembled relationship.

While the shell members 11 and 12 illustrated may be formed of any suitable impervious material, it is preferred that they be formed of aluminum or other similar material or alloy to render the same rugged and unbreakable, thereby greatly extending the useful life thereof. v Because of the danger and/ or discomfort which heretofore existed in drinking extremely hot or cold fluids from metallic cups due to the vrapid transfer of heat between the contents and the cup, the present invention provides 13 extending beyond the edge portion of the shells to form a lip-engaging portion 13a. Thus, danger or discomfort of drinking extremely temperatured drinks from a metallic cup is obviated since, according to this invention the lips of the drinker do not primarily come in contact with the metallic portion of the cup. This is accomplished by disposing a member 13 between the flared edge portions 16 and 17 of the respective shells so that a portion thereof extends beyond the edges thereof to form the lip-engaging portion of the cup. Y

As illustrated in Fig. l, the novel lip-engaging member of the improved cup is preferably made ofa resilient, heat-resisting or insulating material, such as a polyethylene, polyvinyl chloride or copolymers thereof or other similar material. Accordingly, the lip-engaging member 13 consists of the lip-engaging portion 13a which is adapted to extend beyond the edges of the shells and a depending, conically shaped lower portion 13b which is adapted to be positioned between the ared edges of the spaced shells.

According to this invention, the lip-engaging member 13 is connected between the shell members by gripping or pressing the same therebetween. As illustrated in Figs. l and 2, it will be noted that the thickness of the lip-engaging member 13 is slightly greater than the width of the space 19 formed between the shell members. Thus, it will be noted that as the inner shell 11 with the lip member 13 attached thereto, as shown in Fig. l, is positioned or inserted into the outer shell member 12 and the two shells forced under pressure into assembled position as illustrated in Fig. 2; the force applied compresses the lower portion of 13b of the member 13 between the flares 16 and 17 causing the shells to be firmly secured together.

It will be noted in Fig. 2 that the pressure or force applied in assembling the members together causes the terminating edge 16a of the flared portion 16 ofthe inner shell 11 to bite into the resilient member 13 securely fastening the lip-engaging member between the shells. To firmly insure the connection, the gripping portion 18 of the outer shell member 12 is rolled inwardly a sufficient amount so that the edge 18a bites into the outer surface of the lip-engaging member. See Fig. 2. This effectively seals the joint between the shells and the lip-engaging member.

As shown in Fig. 2, it will be noted that the gripping portion 18 extends slightly above the terminating 4edge portion 16a of the inner shell so that as the two edge portions 16a and 18a bite into the resilient lip-engaging member 13,.a slight beading effect is .formed at 21) .which prevents the lip-engaging member 13 from ;being .pulled outwardly from between the shells or from beingpushed down inwardly therebetween, and the force .exerted causes the elements to be secured together tto 'form a rigid and sturdy unitary cup.

It will be further noted that the .connection forms a leakproof seal between the respective shells so that any possibility of liquid seeping or leaking into the space 19 formed between the shell members is prevented and provides an easily cleaned and otherwise sanitary construction.

It will be further noted -that the spacing 19 formed between the inner and outer shells constitutes in effect an insulating vair space -which .tends to retard any heat transfer between the shells.

If it is ldesirable that the air space 19 between the shells be increased, as shown in the modified form of Fig. 3, the inner shell 11 may be provided with a laterally extending flange or shoulder 21 adjacent the upper portion thereof. In this form of the invention, the outwardly flared portion 22 of the inner shell extends upwardly from the outer periphery of the shoulder or laterally extending Aange 21. As a result, any desired amount of air space maybe provided between the respective walls of the shells by simply controlling the width of the annular flange or shoulder portion 21 of the inner shell. In all other respects the outer shell, flarings and lip-engaging member and assembling of the modified form are similar as hereinbefore described. If desired, an insulating material 23, such as glass wool or the like may be disposed in the air space 19, 19 formed between the shells to increase the resistance to heat transfer between the walls thereof.

Thus, according to this invention, the use of a heatresisting or insulating lip-engaging member 13 projecting upwardly `beyond the edges of the shells protects the lip of the drinker from engaging the temperatured walls of the container, thereby enabling a host or hostess to safely serve extremely hot or cold drinks, and which drinks will remain at the desired temperature for longer periods of time. Further, the sealing connection is easily formed to form a leakproof seal.

Variations and modifications may be made within the scope of the claims and portions of the improvements may be used without others.

I claim:

1. An insulated drinking vessel comprising an inner metal shell having an outwardly ared upper edge portion, an outer metal shell surrounding and spaced from the inner shesll and having a similarly,.outwardly ared portion adjacent the upper edge and a gripping portion at the upper edge, and a tubular, resilient heat-insulating rim having the lower portion thereof clamped between the flared portions of said shells with the gripping portion of the outer shell extending upwardly beyond the end of the inner shell and being turned inwardly above the inner shell to grip the rim against the edge of the inner shell and hold the shells and rim in assembled relation with the rim sealing the space between the shells, and the remainder of the rim projecting upwardly beyond the ends of the shells ot provide a protective lip-engaging portion.

2. An insulated drinking vessel comprising an inner shell having a uniformly tapered wall portion provided with an outwardly flared upper edge portion, an outer shell surrounding and spaced from the inner shell and having a similarly, outwardly dared portion adjacent they upper edge and a gripping portion at the upper edge, and a tubular, resilient heat-insulating rim having a lower conical portion thereof` clamped between the ared portions of -said shells with the gripping portion of the outer shell disposed above the edge of the inner shell and turned inwardly to grip and hold the shells and rim in assembled relation, the remainder of the rim being substantially cylindrical and projecting upwardly from the base of the conical portion and beyond the ends of the shells to provide a lip-engaging portion.

3. VA double walled drinking vessel comprising an inner shell having a laterally extending annular shoulder adjacent the upper end portion thereof, said end portion flaring .upwardly and-outwardly from the outer periphery of ysaid shoulder, an vouter shell surrounding and spaced from said inner shell, said outer shell having an outwardly, flared upper end portion terminating with a gripping edge, said gripping ledge projecting slightly higher than said upper flared end of said yinner shell, and a resilient, annular, heat-resisting rim member disposed between the ared ends of said shells having a part thereof projecting beyond the upper edges of said shells to provide-a lip-engaging rim, said gripping edge being inwardly bent -to form a bead overlying the edge of the inner shell and grip and secure the rim member between the `liared ends of said shells forming a sealed connection whereby said shells are maintained in spaced assembled relationship.

4. A double walled drinking vessel comprising an inner shell ihaving a vlaterally extending annular shoulder adjacent the upper end portion thereof, said end portion aring upwardly and outwardly from the outer periphery of said shoulder, an outer shell surrounding and spaced from said inner shell, said outer shell having an outwardly, flared .upper end portion terminating with a @ripping edge, said gripping edge projecting slightly higher lthan said upper ared end of said inner shell, a resilient, annular, heat-resisting -rim member disposed between the ared ends of said shells having a part thereof projecting beyond the upper edges thereof to provide a lip-engaging rim, said gripping edge being inwardly bent to form a bead overlying the edge of the inner shell and grip and secure the rim member between the flared ends of said shells forming a sealed connection whereby said shells are maintained in spaced assembled relationship, and an insulating media disposed in the space formed between said shells to increase the resistance to heat transfer between said shells.

5. A double walled drinking vessel comprising an inner shell having the upper end thereof flaring upwardly and outwardly, an outer shell surrounding and spaced from said inner shell, said outer shell having an outwardly, ared upper end portion terminating with a gripping edge, said gripping edge projecting slightly higher than said upper, ared end of said inner shell, an insulating material disposed in the space formed between said shells to increase the resistance to heat transfer between said shells, and a resilient, annular, heatresisting Vrim member disposed between the ared ends of said shells having a portion thereof projecting beyond the -upper edges thereof to provide a lip-engaging rim, said gripping edge being inwardly bent to form a bead overlying the edge of the inner shell and wedge and frictionally secure the rim member between the ared ends of said shells forming a sealed connection whereby said shells are maintained in spacial assembled relationship.

References Cited in the lile of this patent UNITED STATES PATENTS 1,119,968 Le Sieur Dec. 8, 1914 2,169,426 Morton Aug. 15, 1939 2,339,221 `Gulick Ian. 1l, 1944 I 2,771,754 Winkler Nov. 27, 1956 l FOREIGN PATENTS 92,685 `A1 1Stri.a, May 25. 192.3

UNITED STATES PATENT OFFICE CERTIFICATE 0F CORRECTION Patent No. 2,863,585

December 9, 1958 Philip Meshberg ages" insert above column 2, t "of", column 3,

, after "portion" Strike ou line 55, for "shesll" Signed and sealed this 21st day of April 1959.

( SEAL) Attest:

KARL H. AXLINE 

